Description
Rifle Scope Product Details
Swarovski Z5i 2.4-12×50 – BT-4W-I Riflescope 69771
Swarovski Z5i 2.4-12×50 Illum BT-4W-I Riflescope Black 69771 | 1″ Tube | New
Rifle Scope Product Features
About the Swarovski Optik Brand
Swarovski Optik is a premium maker for rifle scopes, optics, mounts, and other accessories used for firearms like rifles and long guns. They design and build their mounts and related products choosing elements which are durable and long lasting. This includes the Swarovski Z5i 2.4-12×50 – BT-4W-I Riflescope 69771 by Swarovski Optik. For additional shooting products, visit their site.
Information About Rifle Optics
Rifle scopes enable you to specifically aim a rifle at various targets by aligning your eye with the target at range. They do this through magnifying the target using a set of lenses within the scope. The scope’s alignment can be adjusted to take into account many ecological elements like wind and elevation increases to account for bullet drop.
The scope’s purpose is to help shooters understand exactly where the bullet will land based upon the sight picture you are viewing using the scope as you line up the scope’s crosshair or reticle with the intended point of impact. Most contemporary rifle scopes have around eleven parts which are arranged internally and on the exterior of the scope body. These parts consist of the rifle scope’s body, lenses, adjustment dials, focus rings, and other parts. See all eleven parts of scopes.
Rifle Glass Styles
Rifle scopes can be either “first focal plane” or “second focal plane” kind of scopes. The type of focal plane an optic has decides where the reticle or crosshair is located relative to the scopes zoom. It simply means the reticle is situated behind or before the magnification lens of the optic. Picking the most beneficial type of rifle glass is based upon what style of shooting you plan on undertaking.
First Focal Plane Optics
Focal plane scopes (FFP) feature the reticle in front of the zoom lens. These kinds of scopes are helpful for:
- Quick acquisition, far away kinds of shooting
- Shooting circumstances where computations are low
- Experienced shooters who recognize their aim point “hold over” and “lead” relationships for their weapon
- Shooters who do not mind the reticle is enlarged and takes up more visual eyesight area than a SFP reticle
Second Focal Plane Scope Facts
Second focal plane scopes (SFP) include the reticle behind the zoom lens. In the FFP example with the SFP scope, the 5x “zoom” one hundred yard tick reticle measurement would be 1/5th of the non “zoom” tick measurement.
- Long distance styles of shooting where shooters have additional time to make ballistic estimations
- Shooting where most of the shots happen within much shorter distances and ranges
- Shooters who prefer a clearer optic sight picture with less space used up by the enlarged FFP reticle
Glass Zoom
The quantity of zoom a scope offers is determined by the size, density, and curvatures of the lenses inside of the rifle scope. The zoom of the scope is the “power” of the scope.
About Fixed Single Power Lens Rifle Scopes
A single power rifle optic or scope uses a zoom number designator like 4×32. This suggests the zoom power of the scope is 4x power while the objective lens is 32mm. The zoom of this kind of scope can not change because it is a fixed power optic.
Adjustable Power Lens Rifle Glass
Variable power rifle scopes use enhanced power. The power modification is performed by using the power ring part of the scope near the rear of the scope by the eye bell.
Rifle Scope Power and Ranges
Here are some advised scope power settings and the ranges where they can be successfully used. Highly magnified optics will not be as efficient as lower magnification glass due to the fact that too much magnification can be a negative aspect depending on your shooting distance. The same concept applies to longer ranges where the shooter needs to have enough power to see where to best aim the rifle.
About Optic Lens Covering
All present day rifle optic lenses are layered. Lens finishing can be a significant aspect of a rifle when purchasing high end rifle optics and scope equipment.
ED Versus HD Scopes
Some optic manufacturers additionally use “HD” or high-def lense finishes which employ different processes, chemicals, aspects, and polarizations to draw out separate colors and viewable definition through the lens. This high-definition coating is commonly used with greater density glass which brings down light’s capability to refract by means of the lens glass. Some scope vendors use “HD” to describe “ED” signifying extra-low dispersion glass. ED deals with how colors are presented on the chroma spectrum and the chromatic aberration or difference which is similarly called color distortion or fringing. Chromatic aberration can be obvious around objects with hard shapes as light hits the object from various angles.
Single Finish Versus Multi-Coating
Different scope lenses can even have different finishings applied to them. All lenses usually have at least some type of treatment or coating applied to them before they are used in a rifle scope or optic assembly. Since the lens isn’t just a raw piece of glass, they require performance enhancing coatings. It is part of the finely tuned optic. It requires a coating to be applied to it so that the lens will be optimally functional in numerous types of environments, degrees of sunlight (full light VS shaded), and other shooting conditions.
This lens treatment can protect the lens from scratches while minimizing glare and other less advantageous things experienced in the shooting environment while sighting in with the scope. The quality of a single layered lens depends on the scope maker and how much you paid for it.
Some scope makers similarly make it a point to specify if their optic lenses are layered or “multi” coated. Being “much better” depends on the manufacturer’s lens treatment technology and the quality of materials used in constructing the rifle scope.
Anti-water Lens Coatings
Water on a lens doesn’t help with maintaining a clear sight picture through a scope at all. Lots of top of the line and high-end optic makers will coat their lenses with a hydrophilic or hydrophobic anti-water covering.
Scope Mounting Choices
Mounting solutions for scopes are available in a few options. There are the basic scope rings which are individually mounted to the scope and one-piece mounts which cradle the scope. These various types of mounts also typically come in quick release versions which use manual levers which permit rifle operators to rapidly install and dismount the scope.
Hex Key Scope Rings
Standard, clamp style mounting scope rings use hex head screws to fix to the flattop style Picatinny scope mount rails on rifles. These styles of scope mounts use a pair of independent rings to support the scope, and are normally constructed from 7075 T6 billet aluminum or similar materials which are designed for far away precision shooting. This kind of scope mount is effective for rifle systems which need a long lasting, hard use mount which will not change regardless of how much the scope is moved or abuse the rifle takes. These are the style of mounts you want for a specialized optics setup on a far away scouting or hard target interdiction firearm that will hardly ever need to be modified or adjusted. Blue 242 Loctite threadlocker can additionally be used on the scope mount screws to stop the hex screw threads from wiggling out after they are installed tightly in position. An example of these mounting rings are the 30mm type from the Vortex Optics brand. The set typically costs around $200 USD
Scope Mounting Solutions with Quick-Release Cantilever Rings
These types of quick-release rifle scope mounts can be used to rapidly attach and remove a scope from a rifle. Multiple scopes can also be swapped out if they all use a similar designed mount. The quick detach design is CNC crafted from anodized 6061 T6 aluminum and the mounting levers fasten firmly to a flat top style Picatinny rail. This enables the scope to be sighted in while on the rifle, removed from the rifle, and remounted back on the rifle while keeping accuracy. These types of mounts come in practical for shooting platforms which are hauled around a lot, to take off the optic from the rifle for protection, or for optics which are chosen for use in between numerous rifles. An example of this mount style is the 30mm mount from the Vortex Optics manufacturer. It normally costs around $250 USD
Sealing and Gas Purging for Rifle Optic Tubes
Wetness inside your rifle scope can ruin a day of shooting and your costly optic by causing fogging and developing residue inside of the scope tube. A lot of scopes prevent moisture from entering the scope tube with a system of sealing O-rings which are water resistant.
Info on Scope Tube Gas Purging
Another part of preventing the buildup of wetness within the rifle optic tube is filling the tube with a gas like nitrogen. Considering that this space is already occupied by the gas, the scope is less altered by temp changes and pressure variations from the outside environment which might potentially allow water vapor to seep in around the seals to fill the void which would otherwise exist. These are good qualities of a good rifle scope to seek out.
